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Stephen Biss
Jan 13, 20234 min read
Reliability: Flooded Sample Chamber 2
Unfortunately it is very easy for a qualified technician to reverse the inlet and outlet couplings Intoxilyzer to wet-bath simulator.
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Stephen Biss
Dec 8, 20226 min read
What is Differential Voltage Monitoring (DVM) ?
Many years ago Ontario defence lawyers cross-examined breath techs on "how much room there was" on the particular Intoxilyzer 5000C to...
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Stephen Biss
Oct 12, 20224 min read
Change of Response at One Point but Not at Another Point that is Equivalent
Purpose: To suggest that there is empirical evidence in the matter before the Court of change in response by the approved instrument at...
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Stephen Biss
Mar 23, 20183 min read
Response Drifts Over Time
In an article relied upon by the SCC in St. Onge, Brian Hodgson stated: Defence lawyers need to educate themselves about the meanings of...
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Stephen Biss
Feb 10, 20187 min read
Causation of Error v. Calculation of Drift in Precision - Evidence Based Assessment of Reliability
What is the purpose in Stinchcombe/McNeil disclosure or O'Connor production of maintenance records and historical data? Crown CFS...
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Stephen Biss
Jan 18, 201810 min read
Durability Over Time
Purpose: To obtain admissions respecting the inadequacy of ATC / CFS recommendations in requiring "stability of metrological...
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Stephen Biss
Jan 14, 20187 min read
Error Rates and Drift in Precision
Purpose: To establish that the ATC/CFS is not sampling from aging instruments out in the field to determine error rates To establish that...
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